Quasi-experimental, Correlational, And Naturalistic Designs

Chapter 12 
 
Created Apr 17, 2012
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hmw329
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Side ASide B
Closed system
Important factors that influence environment is controlled by the experimenterConfident that...
Open System
Participants can be influenced by a number of factors in which the researchers have little...
Quasi-experimental designs
used to evaluate the impact of a variable on an ongoing process
Correlational designs
describe the relationship between two variables
Naturalistic Observations
describe an ongoing process in its natural setting
Quasi experimental designs:Time series design
Within-subjects design Useful when interested in the effects of an event that has happened...
Quasi experimental designs:Interrupted time series design
several pretest and posttest measurements Can add reversal of phenomenon to add confidence...
Quasi experimental designs:Longitudinal designs
Time is one of the independent variables (related to time series design)same participants assessed...
Quasi experimental designs:Nonequivalent control group posttest- only
Exp. group         X      ...
Quasi-experimental Designs:Nonequivalent before after design
Pretest provides baseline infoVery informative when random assignment is not possible Used...
Test writing productivity, u of s tests program, u of r control group. Whats happening Threats...
Both are increasing, so something else is affecting it Maturation- could just be because one...
No increase with u of r but there is an increase with u of sMight conclude that the program...
No increase in u of r but in crease in u of s started out similar More confidence in the effectiveness...
Strongest evidence that program is working Most confidence in program
Quasi experimental designs:Optimizing nonequivalent before after designs
try to get control groups as similar as possible to experimental groupcollect as much demographic...
Quasi-experimental designs:Retrospective and ex post facto designs
Attempts to use empirical procedures to study something that happened in the past, try to suggest...
Quasi-experimental designs:Comparative time series designExx.
asses two or more variables at different time periods to see how one variable relates to changes...
Why do we use quasi-experimental designs
to study interesting events in real world settings that can not be studied in a lab enhances...
Head start study-Early childhood prgram in the US for preschoolers from low SES homes -Comparison...
Non-equivalent pretest posttest design
Employees at an electronics company assessed for job burnout before and after a scheduled vacationlevel...
Interrupted time-series design
not maturation because no stead inc or decmaybe selection by history effects- vacation might...
Correlational studies
Describes a relationship between two variables does not imply causality, doesnt attempt to...
Correlation coefficient factors that influence it
stat used for establishing relationship degreefactors:restricted range, outliers, reliability...
Advanced Correlational strategies
Regressional analysisCross-lagged panel and structural equation analysisMultielevel modelingfactor...
Naturalistic Observations
Pay attention and observeUseful in complex situationsuseful when little is known
Problems when making observations
Reactive behaviour- participant is influenced by presenceUnobtrusive observations- undectectedSelective...
When anaylzing observations  what do you do
review data several timeslook for patternsevaluate atypical behaviourevaluate any theoretical...
Factors to be considered when decideing whether you or not you should conceal your identity...
observing highly reactive behaviorsif behaviour will be different then use some consealageIf...
Naturalistic observation advantages and disadvantages
Adv.:Describe behavious as it naturally occurssutdies behavioural processes over a period of...
Four categories of Behavioural research
Descriptivecorrelationalquasi-experimentalexperimental


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